path: root/voctogui/voctogui.py

#!/usr/bin/python3
import gi, signal, logging, sys, os

# import GStreamer and GLib-Helper classes
gi.require_version('Gst', '1.0')
from gi.repository import Gtk, Gdk, Gst, GObject, GdkX11, GstVideo

# check min-version
minGst = (1, 5)
minPy = (3, 0)

if Gst.version() < minGst:
    raise Exception("GStreamer version", Gst.version(), 'is too old, at least', minGst, 'is required')

if sys.version_info < minPy:
    raise Exception("Python version", sys.version_info, 'is too old, at least', minPy, 'is required')


# init GObject & Co. before importing local classes
GObject.threads_init()
Gdk.init([])
Gtk.init([])
Gst.init([])

# import local classes
from lib.args import Args
from lib.uibuilder import UiBuilder

# main class
class Voctogui(object):
    def __init__(self):
        self.log = logging.getLogger('Voctogui')
        
        # Instanciate GTK-Builder
        self.builder = UiBuilder()

        # Uf a UI-File was specified on the Command-Line, load it
        if Args.ui_file:
            self.log.info('loading ui-file from file specified on command-line: %s', self.options.ui_file)
            self.builder.add_from_file(Args.ui_file)

        else:
            # Paths to look for the gst-switch UI-File
            paths = [
                os.path.join(os.path.dirname(os.path.realpath(__file__)), 'ui/voctogui.ui'),
                '/usr/lib/voctogui/ui/voctogui.ui'
            ]

            # Look for a gst-switch UI-File and load it
            for path in paths:
                self.log.debug('trying to load ui-file from file %s', path)

                if os.path.isfile(path):
                    self.log.info('loading ui-file from file %s', path)
                    self.builder.add_from_file(path)
                    break

        self.builder.setup()


    def run(self):
        self.log.info('setting UI visible')
        self.builder.show()

        try:
            self.log.info('running Gtk-MainLoop')
            Gtk.main()
            self.log.info('Gtk-MainLoop ended')
        except KeyboardInterrupt:
            self.log.info('Terminated via Ctrl-C')

    def quit(self):
        self.log.info('quitting Gtk-MainLoop')
        Gtk.main_quit()


# run mainclass
def main():
    # configure logging
    docolor = (Args.color == 'always') or (Args.color == 'auto' and sys.stderr.isatty())

    if Args.verbose == 2:
        level = logging.DEBUG
    elif Args.verbose == 1:
        level = logging.INFO
    else:
        level = logging.WARNING

    if docolor:
        format = '\x1b[33m%(levelname)8s\x1b[0m \x1b[32m%(name)s\x1b[0m: %(message)s'
    else:
        format = '%(levelname)8s %(name)s: %(message)s'

    logging.basicConfig(level=level, format=format)

    # make killable by ctrl-c
    logging.debug('setting SIGINT handler')
    signal.signal(signal.SIGINT, signal.SIG_DFL)

    logging.info('Python Version: %s', sys.version_info)
    logging.info('GStreamer Version: %s', Gst.version())

    # init main-class and main-loop
    logging.debug('initializing Voctogui')
    voctogui = Voctogui()

    logging.debug('running Voctogui')
    voctogui.run()

if __name__ == '__main__':
    main()